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+# Ezusb 1/2 RJ45 to DIN8 connector pinout
+This was created from using the BIO2 sub IO board to connect pre IIDX 25 cabinet hardware to the
+BIO2 IO board. The two connector types from different generation IO boards, RJ45 on the ezusb FX
+(C02) board and a round DIN8 connector on the ezusb FX2 (IO2) board are just different connectors to
+the same hardware on the PCB.
+
+Therefore, any C02 wired cabinet can be easily upgraded to IO2 wiring and vice versa by building
+a simple RJ45 -> DIN8 or DIN8 -> RJ45 adapter.
+
+The following connection information was traced on a original Konami BIO2 sub IO board.
+
+RJ45 (female) connector, top view:
+```text
+plug insert
+     |
+     |
+     v
+|-----------|
+|  Top view |
+|           |
+|   Pins    |    
+|   7 5 3 1 |
+|  8 6 4 2  |
+|-----------|
+```
+
+DIN8 (female) connector, top view:
+```text
+plug insert
+     |
+     |
+     v
+|-----------|
+|  Top view |
+|   Pins    |    
+|  3  1 2 6 |
+| 7 4 5 8 9 |
+|-----------|
+```
+
+The two connectors are interconnected on the PCB like this:
+| RJ45 pins | DIN8 pins |
+|-----------|-----------|
+| 1         | 1         |
+| 2         | 7         |
+| 3         | 4         |
+| 4         | 6         |
+| 5         | 5         |
+| 6         | 3         |
+| 7         | 2         |
+| 8         | 1         |
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